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I redid my AR15 Bushmaster trigger tonight

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  • #1

    I redid my AR15 Bushmaster trigger tonight

    Please, If I call stuff the wrong name, cut me a little slack and tell me the correct name, Thanks

    I have a few questions for those that have AR's and mod these. This is my first AR, I took the lower off and the trigger assembly apart tonight for the first time, (and reassembled it several times, a snap).

    It had the typical machine marks in the notch in the hammer that made it feel like it was 60 grit pulling the trigger with about 3/8 creep, really sucked. I also would like a softer pull. I know you can change springs and add a screw to limit creep but I wanted to do as much as I could without changing parts or adding a screw or spending any money.

    I polished the hammer notch and the flat on the front of the trigger where it rides to set the trigger and it helped smooth things up. Then I noticed the hammer cocking back some as I pulled the trigger, that adds to the trigger pull weight, are they all like that and why. The notch in the hammer seems to be at a slightly incorrect angle causing the (seer?) to cock the hammer back more as it's pulled and slid across the notch. I filed down that angle some (re-polished) and got it more at a 180 degree angle to the trigger so when you pull the trigger, the hammer stays stationary. I made sure to leave the edges sharp. All this is just a few .001 removal. Then the creep was still too much so I ground, (reduced) the hammer notch width back some so it has less engagement with the seer reducing the creep.

    Feels great now! is this normally what you have to do or do all you just buy a after market trigger?
    Don't worry about what you can't change.
    Do the best you can with what you have.
    Be honest, even if it hurts.

    "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy; Its inherent virtue is the equal sharing of misery" ... Winston Churchill
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  • #2
    difference in triggers for .308 and .223?

    are they the same?

    Also, I was kind of expecting someone to mention case hardening depth and scold me for grinding. BUT, for now, it shoots nice.
    Don't worry about what you can't change.
    Do the best you can with what you have.
    Be honest, even if it hurts.

    "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy; Its inherent virtue is the equal sharing of misery" ... Winston Churchill

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    • #3
      Sorry but this made me laugh, I learned a good lesson last week about not doing this.
      Ordered this to correct my mistake and it feels good, need to get one more when they are back in stock.
      RTB Enhanced Nickel TEFLON Plated Trigger Assembly
      http://www.righttobear.com/Enhanced-Nickel-Teflon-Trigger-Assembly-p/enta-01.htm
      Built on a traditional mil-spec foundation, our enhanced trigger assembly is made from 8620 steel and heat-treated with an electroless nickel Teflon finish for lubricity and protection against corrosion. Grab your assembly today and save with sale pricing!


      Mine shot great too, then things went bad. I highly recommend replacing the trigger.
      Do more research if you plan to keep that trigger.

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      • #4
        yea POLISHING and removing material off a trigger really isn't recommended although people do it. Its much better just buying a drop in trigger and will act much better. I just dropped in a 2.5 lb cmg 1 stage and its amazing. I tried the route you went and it was better than stock but its nothing like a new drop in.

        A new trigger should be everyones first upgrade on a low end AR.
        sigpic

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        • #5
          back to my first question

          Is it normal to see the hammer cock back slightly as the trigger is pulled?
          Don't worry about what you can't change.
          Do the best you can with what you have.
          Be honest, even if it hurts.

          "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy; Its inherent virtue is the equal sharing of misery" ... Winston Churchill

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          • #6
            No real experience with this but I guess you have nothing to lose by trying it. If it doesn't work, buy an aftermarket setup. Wish you had some before and after pictures of what you polished out.

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            • #7
              If you pulling the trigger and it feeling like grrRRR snap, that's what the before was like , after is like mmsnap.
              Don't worry about what you can't change.
              Do the best you can with what you have.
              Be honest, even if it hurts.

              "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy; Its inherent virtue is the equal sharing of misery" ... Winston Churchill

              Comment

              • #8
                Originally posted by jyro View Post
                If you pulling the trigger and it feeling like grrRRR snap, that's what the before was like , after is like mmsnap.
                Hmm....

                Comment

                • #9
                  Originally posted by jyro View Post
                  Is it normal to see the hammer cock back slightly as the trigger is pulled?
                  Very much so. It is made that way on purpose.
                  Magnus, I am your father. You need to ask your mother about a man named Calvin Klein.

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                  • #10
                    Originally posted by svo855 View Post
                    Very much so. It is made that way on purpose.
                    Did you design that in there on purpose?

                    You did help design the M-16 with Eugene Morrison Stoner correct?

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                    • #11
                      Originally posted by Jose View Post
                      No real experience with this but I guess you have nothing to lose by trying it. If it doesn't work, buy an aftermarket setup. Wish you had some before and after pictures of what you polished out.
                      I thought the same but yea you do. The PSA went south with a lot less done than the OP, don't like that the new triggers are not black but they are much better than the polished PSA and 6920 triggers, you are welcome to come by and see. It goes against my Red Neck upbringing but home polishing an ar trigger is not a good idea.

                      Applied a thin coat of good synthetic gun grease to the pins, inside trigger and hammer when installing.
                      Last edited by ryuu; 12-27-2015, 09:45 PM.

                      Comment

                      • #12
                        Originally posted by likeitfast55 View Post
                        Did you design that in there on purpose?

                        You did help design the M-16 with Eugene Morrison Stoner correct?
                        That trait is not unique to Mr Stoner's design and I have never had the pleasure of meeting the man but I do own plenty of examples of his most famous design.

                        Every single stage trigger is made that way. Keeping that is part of properly doing a trigger job. The trait is known as positive engagement and it is very important to keep if you do not want a gun that is prone to discharging without pulling the trigger.
                        Last edited by svauto-erotic855; 12-28-2015, 11:09 AM.
                        Magnus, I am your father. You need to ask your mother about a man named Calvin Klein.

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